Clean up an EnvServlet from global Runhouse daemon state if it dies

unexpectedly.

runhouse/servers/cluster_servlet.py

@@ -197,5 +197,13 @@ async def aclear_key_to_env_servlet_name_dict(self):
     ##############################################
     # Remove Env Servlet
     ##############################################
-    async def aremove_env_servlet_name(self, env_servlet_name: str):
+    async def aclear_all_references_to_env_servlet_name(self, env_servlet_name: str):
         self._initialized_env_servlet_names.remove(env_servlet_name)
+        deleted_keys = [
+            key
+            for key, env in self._key_to_env_servlet_name.items()
+            if env == env_servlet_name
+        ]
+        for key in deleted_keys:
+            self._key_to_env_servlet_name.pop(key)
+        return deleted_keys

runhouse/servers/obj_store.py

@@ -264,7 +264,21 @@ def initialize(
     @staticmethod
     async def acall_env_servlet_method(servlet_name: str, method: str, *args, **kwargs):
         env_servlet = ObjStore.get_env_servlet(servlet_name)
-        return await ObjStore.acall_actor_method(env_servlet, method, *args, **kwargs)
+        try:
+            return await ObjStore.acall_actor_method(
+                env_servlet, method, *args, **kwargs
+            )
+        except (ray.exceptions.RayActorError, ray.exceptions.OutOfMemoryError) as e:
+            if isinstance(
+                e, ray.exceptions.OutOfMemoryError
+            ) or "died unexpectedly before finishing this task" in str(e):
+                # Need to clean up the env_servlet everywhere
+                # Need an actual instance of the ObjStore that has a cluster servlet set up in order to do this
+                from runhouse.globals import obj_store
+
+                await obj_store.adelete_env_contents(servlet_name)
+
+            raise e
 
     @staticmethod
     async def acall_actor_method(
@@ -534,9 +548,11 @@ async def _apop_env_servlet_name_for_key(self, key: Any, *args) -> str:
     ##############################################
     # Remove Env Servlet
     ##############################################
-    async def aremove_env_servlet_name(self, env_servlet_name: str):
+    async def aclear_all_references_to_env_servlet_name(self, env_servlet_name: str):
         return await self.acall_actor_method(
-            self.cluster_servlet, "aremove_env_servlet_name", env_servlet_name
+            self.cluster_servlet,
+            "aclear_all_references_to_env_servlet_name",
+            env_servlet_name,
         )
 
     ##############################################
@@ -875,17 +891,14 @@ async def adelete_local(self, key: Any):
     async def adelete_env_contents(self, env_name: Any):
         from runhouse.globals import env_servlets
 
-        # clear keys in the env servlet
-        deleted_keys = await self.akeys_for_env_servlet_name(env_name)
-        await self.aclear_for_env_servlet_name(env_name)
-
         # delete the env servlet actor and remove its references
         if env_name in env_servlets:
             actor = env_servlets[env_name]
             ray.kill(actor)
 
             del env_servlets[env_name]
-        await self.aremove_env_servlet_name(env_name)
+
+        deleted_keys = await self.aclear_all_references_to_env_servlet_name(env_name)
 
         return deleted_keys